2

Inconsistency of perceived 3D shape

Internal consistency of local depth, slant, and curvature judgments was studied by asking participants to match two 3D surfaces rendered by different mixtures of 3D cues (velocity, texture, and shading). We found that perceptual judgments were not …

New Method to Measure End-to-End Delay of Virtual Reality

A virtual reality (VR) system tracks one or more objects to generate the depiction of a virtual environment from the user's vantage point. No system achieves this instantaneously: changes in the depicted virtual environment are delayed from changes …

User-based evaluation of data-driven haptic rendering

In this article, the data-driven haptic rendering approach presented in our earlier work is assessed. The approach relies on recordings from real objects from which a data-driven model is derived that captures the haptic properties of the object. We …

Within- and cross-modal distance information disambiguate visual size-change perception

Perception is fundamentally underconstrained because different combinations of object properties can generate the same sensory information. To disambiguate sensory information into estimates of scene properties, our brains incorporate prior knowledge …

Influence of visual and haptic delays on stiffness perception in augmented reality

Visual delays are unavoidable in augmented reality setups and occur in different steps of the rendering pipeline. In the context of haptic interaction with virtual objects, it has been shown that delayed force feedback can alter the perception of …

Recalibration of multisensory simultaneity: Cross-modal transfer coincides with a change in perceptual latency

After exposure to asynchronous sound and light stimuli, perceived audio-visual synchrony changes to compensate for the asynchrony. Here we investigate to what extent this audio-visual recalibration effect transfers to visual-tactile and audiotactile …

Kinesthetics of dancing vs. cyclical movements

In this work, we analyzed and compared two patterns of movement according to a rhythmic signal (dancing vs. cyclical rhyth- mic movements) to create a more natural virtual dancing partner with haptic feedback. We observed linear movements to reduce …

The relation between disparity and velocity signals of rigidly moving objects constrains depth order perception

In two experiments, observers were asked to judge the relative depth of a probe and one or two flanker dots. In Experiment 1, we found that such judgments were influenced by the properties of adjacent image regions, that is, by the amount of angular …

Spatial integration in structure from motion

In three experiments we investigated whether the perception of 3D structure from the optic-flow involves a process of spatial integration. The observer's task was to judge the 3D orientation of local velocity field patches. In two conditions, the …

Short-term temporal recruitment in structure from motion

Temporal integration was investigated in the minimal conditions necessary to perform a structure-from-motion (SFM) task. Observers were asked to discriminate three-dimensional (3D) surface orientations in conditions in which the stimulus displays …